The basic structure is the same; the <video> tag can use the same autoplay, loop, and preload attributes as the <audio> tag. The only difference is that unlike audio, video has a specific size. width and height for the video should be entered with CSS:

<video controls style="width: 50%; height: auto;">

<source src="sintel.mp4" type="video/mpeg">

<source src="sintel.webm" type="video/webm" >

</video>

Note that this CSS will make the video responsive, just like a fluid image. In fact all of CSS, including transforms, can be used to style the <video> element.

You can also use the poster attribute to point the
<video> tag to an image that acts as a placeholder for the movie (by default, the <video> tag will only show the first frame of the file as its default, which may well be black, or may otherwise misrepresentation of the film as a whole):

MIME Types

As with audio, video must be served with the correct MIME types from your web server if you are including video on a page. The easiest way to ensure this is to add the following lines to your .htaccess file: